Great weapon-feel! Event better- huge spider tank boss (should be more of them in those jam games)!
The one thing I didn't like is what acgaudette already said- lack of feedback when being hit. Every time I died, I was a bit surprised. Also- since the baddies were more deadly up close, the game wolud benefit of some more complex level design. The gun-feel (not a real word, but you know what I mean), and enemies (humanoid ones), would feel great in some tight corridors, or mid-range scenarios.
Keep up the great work!